[time-nuts] A different timenuts interest

Don Latham djl at montana.com
Thu Jul 22 14:12:49 EDT 2010


The Griffith Park exhibit did include a Tesla Coil. Hmmmmm...
Don

J. Forster
> How about putting a high voltage, high frequency on the bob and wire, so
> any body part that gets within say 2 feet draws giant arcs? :<))
>
> -John
>
> ===============
>
>
>> Well, I thought it was interesting that a barrier was needed at least
>> 3 feet away from the swing so that people would not grab the cable.
>>
>> Can you imagine the effect of grabbing the cable with a 250 pound bob
>> attached?
>>
>> I'd build one called "Evolution in Action." Put a Poe-like blade on
>> the bottom of the ball and omit the railing. That is, if I had the
>> money, ah, and the building. And my own country, where allowing idiots
>> to breed was illegal.
>>
>> Bill Hawkins
>>
>> -----Original Message-----
>> From: time-nuts-bounces at febo.com [mailto:time-nuts-bounces at febo.com] On
>> Behalf Of Bob Camp
>> Sent: Thursday, July 22, 2010 11:53 AM
>> To: 'Discussion of precise time and frequency measurement'
>> Subject: Re: [time-nuts] A different timenuts interest
>>
>> Hi
>>
>> At > $30K certainly not cheap. My guess is that the building
>> modifications
>> and permits will set you back a pretty significant chunk of money as
>> well.
>>
>> The issue of troubleshooting a 6 story high machine in a public space
>> (plus
>> insurance issues) likely makes the "proven design" a much better
>> decision
>> than a one off.
>>
>> Bob
>>
>> -----Original Message-----
>> From: time-nuts-bounces at febo.com [mailto:time-nuts-bounces at febo.com] On
>> Behalf Of Brooke Clarke
>> Sent: Thursday, July 22, 2010 10:38 AM
>> To: Discussion of precise time and frequency measurement
>> Cc: Morris Odell
>> Subject: Re: [time-nuts] A different timenuts interest
>>
>> Hi Morris:
>>
>> See:
>> http://www.calacademy.org/products/pendulum/pendulum_sales.html
>> http://www.calacademy.org/products/pendulum/pendspec.pdf
>> they are not cheap, but a proven design and probably lower in cost than
>> making  just one of them.
>>
>> One of these was working at Foothill College in Los Altos Hills,
>> California when I was there.  It was outside in a combined pit and
>> tower, but is not longer in use.  It needs to be somewhere inside where
>> vandals can not get to it.
>>
>> Have Fun,
>>
>> Brooke Clarke
>> http://www.PRC68.com
>>
>>
>> Morris Odell wrote:
>>> Hi all,
>>>
>>> I have been asked to help with the construction of a Foucault pendulum.
>> This
>>> is a long pendulum which oscillates in a slow stately fashion in a
>>> fixed
>>> plane which appears to move as the earth rotates. In reality the
>> surrounding
>>> environment is really moving relative to the plane of oscillation.
>>>
>>> The pendulum requires a sustaining system to compensate for the
>>> inevitable
>>> energy loss with each swing. The system is located in the building and
>>> therefore rotates relative to the pendulum. It needs to provide an
>>> impulse
>>> which does not affect the plane of oscillation of the pendulum. I was
>>> thinking of an electromagnet located below the centre of the swing
>>> which
>>> would be pulsed appropriately as the bob passes over it.
>>>
>>> Has anyone here had any experience with such a system of have any
>>> suggestions regarding the sustaining system? This is an interesting and
>>> challenging project.
>>>
>>> Cheers,
>>>
>>> Morris
>>>
>>>
>>>
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>>>
>>
>>
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>>
>>
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>
>
>
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-- 
"Neither the voice of authority nor the weight of reason and argument are
as significant as experiment, for thence comes quiet to the mind."
R. Bacon


Dr. Don Latham AJ7LL
Six Mile Systems LLP
17850 Six Mile Road
POB 134
Huson, MT, 59846
VOX 406-626-4304
www.lightningforensics.com
www.sixmilesystems.com





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